Celtic captain Scott Brown will miss the Champions League last 16 second leg against Juventus and Scotland's double header against Wales and Serbia, his manager Neil Lennon said on Tuesday.
Brown has a thigh injury and will be joined on the sidelines for the match in Turin next Wednesday by defender Mikael Lustig who has bone bruising.
Celtic's hopes of reaching the quarter-finals are hanging by the slimmest of threads after they lost the first leg 3-0 in a physical encounter in Glasgow two weeks ago.
"We're still waiting to hear about Brown but he will miss Juventus and the Scotland double header," Lennon told reporters.
"We are still waiting to hear from the specialist, whether he requires surgery or not and I am hoping that we will get a definitive answer by the end of the week.
"Lustig is out for two to three weeks, it is bone bruising so it could even be longer.
"So I imagine he will miss Juventus.
"Kris [Commons] is back from his virus and Lassad [Nouioui] has had a bit of a virus but he is in the squad."
Scotland, who are bottom their 2014 World Cup qualifying group, play back-to-back Group A matches on March 22 and 26.
Bayern fans snap up 45,000 tickets to watch Champions League final live at Allianz Arena
When Sir Alex wakes up on Monday morning without team to manage, he will not be putting his feet up
Paris Saint-Germain midfielder announces he will be retiring at the end of the current season
Record goal-scorer signs a one-year contract extension with Europa League winners Chelsea
Ten years on, the legends speak to FFT
Your questions answered by an A to Z of legends
He's here, he's there, he's...
The cost of Premier League away travel
Nike CR7 IX for you
FourFourTwo is brought to you by Haymarket Consumer Media & FourFourTwo is part of Haymarket Sport
| International Licensing | © Haymarket Media Group 2010